Yebbut - if it is fixed it is fixed. As a previous poster said, you ride then decide. If the gear-change is clunky, you walk away. You should ask for the warranty history for that bike (although I didn't!

, but I do have an Approved Used Warranty....)
The warranty exists to fix these issues, the problem with new models is that the fix hasn't been designed yet so it takes more time to sort out. In today's market customers don't want to wait as long as they once did, hence all the friction we see on posts like this.
There is no pile of rejected bikes (or cars); eventually they get fixed and sold on. If a characteristic is still noticeable, usually there is customer somewhere out there who accepts it at the right price. BTW for those who don't know, a "characteristic" is manufacturer-speak for a behaviour by the vehicle that cannot be changed, e.g. Servo ABS makes a whining noise on 1150s; some customers complain but there is no solution (yes, I know, take it off, yada-yada).
IMHO BMW treats customers well but I agree there seem to be too many major issues with too many models, especially for a brand with a reputation like BM. Another thread mentioned the difference between German and Japanese approaches which summed it up well; German companies are engineer-led whereas Japanese companies are sales-led.
A